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POHow to display clicked image from a set of images from a linear layout?
 

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  1. POHow to display clicked image from a set of images from a linear layout?
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    <p>i got images from SD card folder and added them to LinearLayout dynamically which is inside a HorizontalScrollview.now when i click an image i want to show that particular image in another ImageView in the same activity as big image. how can i do that? i tried by getting getId(),getTag() but i am unable to do, please give me suggestions. Note:I dont want use gallery widget because of center-locking feature. My code :</p> <pre><code> package com.pop.cam; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.view.View; import android.view.ViewGroup.LayoutParams; import android.widget.ImageView; import android.widget.LinearLayout; public class GalleryView extends Activity { ImageView iv; File[] sdDirFiles; LinearLayout linearLayout; int i; String path; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.pictures); linearLayout = (LinearLayout) findViewById(R.id.linearView); iv = (ImageView) findViewById(R.id.ImageView); // getting images from SD card folder File sdDir = new File("/sdcard/Pictures/" + MyCameraAppActivity.DIR_NAME); sdDirFiles = sdDir.listFiles(); for (i = 0; i &lt; sdDirFiles.length; i++) { final ImageView imageView = new ImageView(this); imageView.setScaleType(ImageView.ScaleType.FIT_XY); imageView.setLayoutParams(new LayoutParams(130, 100)); Bitmap b = decodeFile(sdDirFiles[i].getAbsoluteFile()); imageView.setImageBitmap(b); path = sdDirFiles[i].getAbsolutePath(); imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Here i want to set clicked image as big. //I tried following but not workin iv.setImageResource(v.getId()); iv.setImageURI(Uri.parse(path)); Bitmap b = decodeFile(sdDirFiles[Integer.valueOf(v.getId())].getAbsoluteFile()); iv.setImageBitmap(b); } }); linearLayout.addView(imageView); } } // decodes image and scales it to reduce memory consumption private Bitmap decodeFile(File f) { try { // Decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; BitmapFactory.decodeStream(new FileInputStream(f), null, o); // The new size we want to scale to final int REQUIRED_SIZE = 70; // Find the correct scale value. It should be the power of 2. int scale = 1; while (o.outWidth / scale / 2 &gt;= REQUIRED_SIZE &amp;&amp; o.outHeight / scale / 2 &gt;= REQUIRED_SIZE) scale *= 2; // Decode with inSampleSize BitmapFactory.Options o2 = new BitmapFactory.Options(); o2.inSampleSize = scale; return BitmapFactory.decodeStream(new FileInputStream(f), null, o2); } catch (FileNotFoundException e) { } return null; } } </code></pre> <p>pictures.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" &gt; &lt;HorizontalScrollView android:id="@+id/horizontalScorllView" android:layout_width="fill_parent" android:layout_height="wrap_content" &gt; &lt;LinearLayout android:id="@+id/linearView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" &gt; &lt;/LinearLayout&gt; &lt;/HorizontalScrollView&gt; &lt;ImageView android:id="@+id/ImageView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:contentDescription="@string/app_name" &gt; &lt;/ImageView&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. USP Srinivas Goud
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